src/processes.c

   1 /**
   2  * collectd - src/processes.c
   3  * Copyright (C) 2005  Lyonel Vincent
   4  * Copyright (C) 2006  Florian Forster (Mach code)
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  *
  20  * Authors:
  21  *   Lyonel Vincent <lyonel at ezix.org>
  22  *   Florian octo Forster <octo at verplant.org>
  23  **/
  24
  25 #include "collectd.h"
  26 #include "common.h"
  27 #include "plugin.h"
  28 #include "utils_debug.h"
  29 #include "configfile.h"
  30
  31 /* Include header files for the mach system, if they exist.. */
  32 #if HAVE_THREAD_INFO
  33 #  if HAVE_MACH_MACH_INIT_H
  34 #    include <mach/mach_init.h>
  35 #  endif
  36 #  if HAVE_MACH_HOST_PRIV_H
  37 #    include <mach/host_priv.h>
  38 #  endif
  39 #  if HAVE_MACH_MACH_ERROR_H
  40 #    include <mach/mach_error.h>
  41 #  endif
  42 #  if HAVE_MACH_MACH_HOST_H
  43 #    include <mach/mach_host.h>
  44 #  endif
  45 #  if HAVE_MACH_MACH_PORT_H
  46 #    include <mach/mach_port.h>
  47 #  endif
  48 #  if HAVE_MACH_MACH_TYPES_H
  49 #    include <mach/mach_types.h>
  50 #  endif
  51 #  if HAVE_MACH_MESSAGE_H
  52 #    include <mach/message.h>
  53 #  endif
  54 #  if HAVE_MACH_PROCESSOR_SET_H
  55 #    include <mach/processor_set.h>
  56 #  endif
  57 #  if HAVE_MACH_TASK_H
  58 #    include <mach/task.h>
  59 #  endif
  60 #  if HAVE_MACH_THREAD_ACT_H
  61 #    include <mach/thread_act.h>
  62 #  endif
  63 #  if HAVE_MACH_VM_REGION_H
  64 #    include <mach/vm_region.h>
  65 #  endif
  66 #  if HAVE_MACH_VM_MAP_H
  67 #    include <mach/vm_map.h>
  68 #  endif
  69 #  if HAVE_MACH_VM_PROT_H
  70 #    include <mach/vm_prot.h>
  71 #  endif
  72 /* #endif HAVE_THREAD_INFO */
  73
  74 #elif KERNEL_LINUX
  75 #  if HAVE_LINUX_CONFIG_H
  76 #    include <linux/config.h>
  77 #  endif
  78 #  ifndef CONFIG_HZ
  79 #    define CONFIG_HZ 100
  80 #  endif
  81 #endif /* KERNEL_LINUX */
  82
  83 #define MODULE_NAME "processes"
  84
  85 #if HAVE_THREAD_INFO || KERNEL_LINUX
  86 # define PROCESSES_HAVE_READ 1
  87 #else
  88 # define PROCESSES_HAVE_READ 0
  89 #endif
  90
  91 #define BUFSIZE 256
  92
  93 static char *processes_file = "processes.rrd";
  94 static char *processes_ds_def[] =
  95 {
  96         "DS:running:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  97         "DS:sleeping:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  98         "DS:zombies:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
  99         "DS:stopped:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 100         "DS:paging:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 101         "DS:blocked:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 102         NULL
 103 };
 104 static int processes_ds_num = 6;
 105
 106 static char *ps_rss_file = "processes/ps_rss-%s.rrd";
 107 static char *ps_rss_ds_def[] =
 108 {
 109         /* max = 2^63 - 1 */
 110         "DS:byte:GAUGE:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 111         NULL
 112 };
 113 static int ps_rss_ds_num = 1;
 114
 115 static char *ps_cputime_file = "processes/ps_cputime-%s.rrd";
 116 static char *ps_cputime_ds_def[] =
 117 {
 118         /* 1 second in user-mode per second ought to be enough.. */
 119         "DS:user:COUNTER:"COLLECTD_HEARTBEAT":0:1000000",
 120         "DS:syst:COUNTER:"COLLECTD_HEARTBEAT":0:1000000",
 121         NULL
 122 };
 123 static int ps_cputime_ds_num = 2;
 124
 125 static char *ps_count_file = "processes/ps_count-%s.rrd";
 126 static char *ps_count_ds_def[] =
 127 {
 128         "DS:processes:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 129         "DS:threads:GAUGE:"COLLECTD_HEARTBEAT":0:65535",
 130         NULL
 131 };
 132 static int ps_count_ds_num = 2;
 133
 134 static char *ps_pagefaults_file = "processes/ps_pagefaults-%s.rrd";
 135 static char *ps_pagefaults_ds_def[] =
 136 {
 137         /* max = 2^63 - 1 */
 138         "DS:minflt:COUNTER:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 139         "DS:majflt:COUNTER:"COLLECTD_HEARTBEAT":0:9223372036854775807",
 140         NULL
 141 };
 142 static int ps_pagefaults_ds_num = 2;
 143
 144 static char *config_keys[] =
 145 {
 146         "Process",
 147         NULL
 148 };
 149 static int config_keys_num = 1;
 150
 151 typedef struct procstat_entry_s
 152 {
 153         unsigned long id;
 154         unsigned long age;
 155
 156         unsigned long num_proc;
 157         unsigned long num_lwp;
 158         unsigned long vmem_rss;
 159
 160         unsigned long vmem_minflt;
 161         unsigned long vmem_majflt;
 162         unsigned long vmem_minflt_counter;
 163         unsigned long vmem_majflt_counter;
 164
 165         unsigned long cpu_user;
 166         unsigned long cpu_system;
 167         unsigned long cpu_user_counter;
 168         unsigned long cpu_system_counter;
 169
 170         struct procstat_entry_s *next;
 171 } procstat_entry_t;
 172
 173 #define PROCSTAT_NAME_LEN 256
 174 typedef struct procstat
 175 {
 176         char          name[PROCSTAT_NAME_LEN];
 177
 178         unsigned long num_proc;
 179         unsigned long num_lwp;
 180         unsigned long vmem_rss;
 181
 182         unsigned long vmem_minflt_counter;
 183         unsigned long vmem_majflt_counter;
 184
 185         unsigned long cpu_user_counter;
 186         unsigned long cpu_system_counter;
 187
 188         struct procstat   *next;
 189         struct procstat_entry_s *instances;
 190 } procstat_t;
 191
 192 static procstat_t *list_head_g = NULL;
 193
 194 #if HAVE_THREAD_INFO
 195 static mach_port_t port_host_self;
 196 static mach_port_t port_task_self;
 197
 198 static processor_set_name_array_t pset_list;
 199 static mach_msg_type_number_t     pset_list_len;
 200 /* #endif HAVE_THREAD_INFO */
 201
 202 #elif KERNEL_LINUX
 203 static long pagesize_g;
 204 #endif /* KERNEL_LINUX */
 205
 206 static void ps_list_register (const char *name)
 207 {
 208         procstat_t *new;
 209         procstat_t *ptr;
 210
 211         if ((new = (procstat_t *) malloc (sizeof (procstat_t))) == NULL)
 212                 return;
 213         memset (new, 0, sizeof (procstat_t));
 214         strncpy (new->name, name, PROCSTAT_NAME_LEN);
 215
 216         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 217         {
 218                 if (strcmp (ptr->name, name) == 0)
 219                         return;
 220                 if (ptr->next == NULL)
 221                         break;
 222         }
 223
 224         if (ptr == NULL)
 225                 list_head_g = new;
 226         else
 227                 ptr->next = new;
 228 }
 229
 230 static procstat_t *ps_list_search (const char *name)
 231 {
 232         procstat_t *ptr;
 233
 234         for (ptr = list_head_g; ptr != NULL; ptr = ptr->next)
 235                 if (strcmp (ptr->name, name) == 0)
 236                         break;
 237
 238         return (ptr);
 239 }
 240
 241 static void ps_list_add (const char *name, procstat_entry_t *entry)
 242 {
 243         procstat_t *ps;
 244         procstat_entry_t *pse;
 245
 246         if (entry->id == 0)
 247                 return;
 248
 249         if ((ps = ps_list_search (name)) == NULL)
 250                 return;
 251
 252         for (pse = ps->instances; pse != NULL; pse = pse->next)
 253                 if ((pse->id == entry->id) || (pse->next == NULL))
 254                         break;
 255
 256         if ((pse == NULL) || (pse->id != entry->id))
 257         {
 258                 procstat_entry_t *new;
 259
 260                 new = (procstat_entry_t *) malloc (sizeof (procstat_entry_t));
 261                 if (new == NULL)
 262                         return;
 263                 memset (new, 0, sizeof (procstat_entry_t));
 264                 new->id = entry->id;
 265
 266                 if (pse == NULL)
 267                         ps->instances = new;
 268                 else
 269                         pse->next = new;
 270
 271                 pse = new;
 272         }
 273
 274         pse->age = 0;
 275         pse->num_proc = entry->num_proc;
 276         pse->num_lwp  = entry->num_lwp;
 277         pse->vmem_rss = entry->vmem_rss;
 278
 279         ps->num_proc += pse->num_proc;
 280         ps->num_lwp  += pse->num_lwp;
 281         ps->vmem_rss += pse->vmem_rss;
 282
 283         if ((entry->vmem_minflt_counter == 0)
 284                         && (entry->vmem_majflt_counter == 0))
 285         {
 286                 pse->vmem_minflt_counter += entry->vmem_minflt;
 287                 pse->vmem_minflt = entry->vmem_minflt;
 288
 289                 pse->vmem_majflt_counter += entry->vmem_majflt;
 290                 pse->vmem_majflt = entry->vmem_majflt;
 291         }
 292         else
 293         {
 294                 if (entry->vmem_minflt_counter < pse->vmem_minflt_counter)
 295                 {
 296                         pse->vmem_minflt = entry->vmem_minflt_counter
 297                                 + (ULONG_MAX - pse->vmem_minflt_counter);
 298                 }
 299                 else
 300                 {
 301                         pse->vmem_minflt = entry->vmem_minflt_counter - pse->vmem_minflt_counter;
 302                 }
 303                 pse->vmem_minflt_counter = entry->vmem_minflt_counter;
 304
 305                 if (entry->vmem_majflt_counter < pse->vmem_majflt_counter)
 306                 {
 307                         pse->vmem_majflt = entry->vmem_majflt_counter
 308                                 + (ULONG_MAX - pse->vmem_majflt_counter);
 309                 }
 310                 else
 311                 {
 312                         pse->vmem_majflt = entry->vmem_majflt_counter - pse->vmem_majflt_counter;
 313                 }
 314                 pse->vmem_majflt_counter = entry->vmem_majflt_counter;
 315         }
 316
 317         ps->vmem_minflt_counter += pse->vmem_minflt;
 318         ps->vmem_majflt_counter += pse->vmem_majflt;
 319
 320         if ((entry->cpu_user_counter == 0)
 321                         && (entry->cpu_system_counter == 0))
 322         {
 323                 pse->cpu_user_counter += entry->cpu_user;
 324                 pse->cpu_user = entry->cpu_user;
 325
 326                 pse->cpu_system_counter += entry->cpu_system;
 327                 pse->cpu_system = entry->cpu_system;
 328         }
 329         else
 330         {
 331                 if (entry->cpu_user_counter < pse->cpu_user_counter)
 332                 {
 333                         pse->cpu_user = entry->cpu_user_counter
 334                                 + (ULONG_MAX - pse->cpu_user_counter);
 335                 }
 336                 else
 337                 {
 338                         pse->cpu_user = entry->cpu_user_counter - pse->cpu_user_counter;
 339                 }
 340                 pse->cpu_user_counter = entry->cpu_user_counter;
 341
 342                 if (entry->cpu_system_counter < pse->cpu_system_counter)
 343                 {
 344                         pse->cpu_system = entry->cpu_system_counter
 345                                 + (ULONG_MAX - pse->cpu_system_counter);
 346                 }
 347                 else
 348                 {
 349                         pse->cpu_system = entry->cpu_system_counter - pse->cpu_system_counter;
 350                 }
 351                 pse->cpu_system_counter = entry->cpu_system_counter;
 352         }
 353
 354         ps->cpu_user_counter   += pse->cpu_user;
 355         ps->cpu_system_counter += pse->cpu_system;
 356 }
 357
 358 static void ps_list_reset (void)
 359 {
 360         procstat_t *ps;
 361         procstat_entry_t *pse;
 362         procstat_entry_t *pse_prev;
 363
 364         for (ps = list_head_g; ps != NULL; ps = ps->next)
 365         {
 366                 ps->num_proc    = 0;
 367                 ps->num_lwp     = 0;
 368                 ps->vmem_rss    = 0;
 369
 370                 pse_prev = NULL;
 371                 pse = ps->instances;
 372                 while (pse != NULL)
 373                 {
 374                         if (pse->age > 10)
 375                         {
 376                                 DBG ("Removing this procstat entry cause it's too old: "
 377                                                 "id = %lu; name = %s;",
 378                                                 pse->id, ps->name);
 379
 380                                 if (pse_prev == NULL)
 381                                 {
 382                                         ps->instances = pse->next;
 383                                         free (pse);
 384                                         pse = ps->instances;
 385                                 }
 386                                 else
 387                                 {
 388                                         pse_prev->next = pse->next;
 389                                         free (pse);
 390                                         pse = pse_prev->next;
 391                                 }
 392                         }
 393                         else
 394                         {
 395                                 pse->age++;
 396                                 pse_prev = pse;
 397                                 pse = pse->next;
 398                         }
 399                 } /* while (pse != NULL) */
 400         } /* for (ps = list_head_g; ps != NULL; ps = ps->next) */
 401 }
 402
 403 static int ps_config (char *key, char *value)
 404 {
 405         if (strcasecmp (key, "Process") == 0)
 406         {
 407                 ps_list_register (value);
 408         }
 409         else
 410         {
 411                 return (-1);
 412         }
 413
 414         return (0);
 415 }
 416
 417 static void ps_init (void)
 418 {
 419 #if HAVE_THREAD_INFO
 420         kern_return_t status;
 421
 422         port_host_self = mach_host_self ();
 423         port_task_self = mach_task_self ();
 424
 425         if (pset_list != NULL)
 426         {
 427                 vm_deallocate (port_task_self,
 428                                 (vm_address_t) pset_list,
 429                                 pset_list_len * sizeof (processor_set_t));
 430                 pset_list = NULL;
 431                 pset_list_len = 0;
 432         }
 433
 434         if ((status = host_processor_sets (port_host_self,
 435                                         &pset_list,
 436                                         &pset_list_len)) != KERN_SUCCESS)
 437         {
 438                 syslog (LOG_ERR, "host_processor_sets failed: %s\n",
 439                                 mach_error_string (status));
 440                 pset_list = NULL;
 441                 pset_list_len = 0;
 442                 return;
 443         }
 444 /* #endif HAVE_THREAD_INFO */
 445
 446 #elif KERNEL_LINUX
 447         pagesize_g = sysconf(_SC_PAGESIZE);
 448         DBG ("pagesize_g = %li; CONFIG_HZ = %i;",
 449                         pagesize_g, CONFIG_HZ);
 450 #endif /* KERNEL_LINUX */
 451
 452         return;
 453 }
 454
 455 static void ps_write (char *host, char *inst, char *val)
 456 {
 457         rrd_update_file (host, processes_file, val,
 458                         processes_ds_def, processes_ds_num);
 459 }
 460
 461 static void ps_rss_write (char *host, char *inst, char *val)
 462 {
 463         char filename[256];
 464         int status;
 465
 466         status = snprintf (filename, 256, ps_rss_file, inst);
 467         if ((status < 1) || (status >= 256))
 468                 return;
 469
 470         rrd_update_file (host, filename, val, ps_rss_ds_def, ps_rss_ds_num);
 471 }
 472
 473 static void ps_cputime_write (char *host, char *inst, char *val)
 474 {
 475         char filename[256];
 476         int status;
 477
 478         status = snprintf (filename, 256, ps_cputime_file, inst);
 479         if ((status < 1) || (status >= 256))
 480                 return;
 481
 482         DBG ("host = %s; filename = %s; val = %s;",
 483                         host, filename, val);
 484         rrd_update_file (host, filename, val,
 485                         ps_cputime_ds_def, ps_cputime_ds_num);
 486 }
 487
 488 static void ps_count_write (char *host, char *inst, char *val)
 489 {
 490         char filename[256];
 491         int status;
 492
 493         status = snprintf (filename, 256, ps_count_file, inst);
 494         if ((status < 1) || (status >= 256))
 495                 return;
 496
 497         DBG ("host = %s; filename = %s; val = %s;",
 498                         host, filename, val);
 499         rrd_update_file (host, filename, val,
 500                         ps_count_ds_def, ps_count_ds_num);
 501 }
 502
 503 static void ps_pagefaults_write (char *host, char *inst, char *val)
 504 {
 505         char filename[256];
 506         int status;
 507
 508         status = snprintf (filename, 256, ps_pagefaults_file, inst);
 509         if ((status < 1) || (status >= 256))
 510                 return;
 511
 512         DBG ("host = %s; filename = %s; val = %s;",
 513                         host, filename, val);
 514         rrd_update_file (host, filename, val,
 515                         ps_pagefaults_ds_def, ps_pagefaults_ds_num);
 516 }
 517
 518 #if PROCESSES_HAVE_READ
 519 static void ps_submit (int running,
 520                 int sleeping,
 521                 int zombies,
 522                 int stopped,
 523                 int paging,
 524                 int blocked)
 525 {
 526         char buf[BUFSIZE];
 527
 528         if (snprintf (buf, BUFSIZE, "%u:%i:%i:%i:%i:%i:%i",
 529                                 (unsigned int) curtime,
 530                                 running, sleeping, zombies, stopped, paging,
 531                                 blocked) >= BUFSIZE)
 532                 return;
 533
 534         DBG ("running = %i; sleeping = %i; zombies = %i; stopped = %i; paging = %i; blocked = %i;",
 535                         running, sleeping, zombies, stopped, paging, blocked);
 536
 537         plugin_submit (MODULE_NAME, "-", buf);
 538 }
 539
 540 static void ps_submit_proc_list (procstat_t *ps)
 541 {
 542         char buffer[64];
 543
 544         if (ps == NULL)
 545                 return;
 546
 547         snprintf (buffer, 64, "%u:%lu",
 548                         (unsigned int) curtime,
 549                         ps->vmem_rss);
 550         buffer[63] = '\0';
 551         plugin_submit ("ps_rss", ps->name, buffer);
 552
 553         snprintf (buffer, 64, "%u:%u:%u",
 554                         (unsigned int) curtime,
 555                         /* Make the counter overflow */
 556                         (unsigned int) (ps->cpu_user_counter   & 0xFFFFFFFF),
 557                         (unsigned int) (ps->cpu_system_counter & 0xFFFFFFFF));
 558         buffer[63] = '\0';
 559         plugin_submit ("ps_cputime", ps->name, buffer);
 560
 561         snprintf (buffer, 64, "%u:%lu:%lu",
 562                         (unsigned int) curtime,
 563                         ps->num_proc, ps->num_lwp);
 564         buffer[63] = '\0';
 565         plugin_submit ("ps_count", ps->name, buffer);
 566
 567         snprintf (buffer, 64, "%u:%lu:%lu",
 568                         (unsigned int) curtime,
 569                         ps->vmem_minflt_counter, ps->vmem_majflt_counter);
 570         buffer[63] = '\0';
 571         plugin_submit ("ps_pagefaults", ps->name, buffer);
 572
 573         DBG ("name = %s; num_proc = %lu; num_lwp = %lu; vmem_rss = %lu; "
 574                         "vmem_minflt_counter = %i; vmem_majflt_counter = %i; "
 575                         "cpu_user_counter = %i; cpu_system_counter = %i;",
 576                         ps->name, ps->num_proc, ps->num_lwp, ps->vmem_rss,
 577                         ps->vmem_minflt_counter, ps->vmem_majflt_counter, ps->cpu_user_counter,
 578                         ps->cpu_system_counter);
 579
 580 }
 581
 582 #if KERNEL_LINUX
 583 static int *ps_read_tasks (int pid)
 584 {
 585         int *list = NULL;
 586         int  list_size = 1; /* size of allocated space, in elements */
 587         int  list_len = 0;  /* number of currently used elements */
 588
 589         char           dirname[64];
 590         DIR           *dh;
 591         struct dirent *ent;
 592
 593         snprintf (dirname, 64, "/proc/%i/task", pid);
 594         dirname[63] = '\0';
 595
 596         if ((dh = opendir (dirname)) == NULL)
 597         {
 598                 syslog (LOG_NOTICE, "processes plugin: Failed to open directory `%s'",
 599                                 dirname);
 600                 return (NULL);
 601         }
 602
 603         while ((ent = readdir (dh)) != NULL)
 604         {
 605                 if (!isdigit (ent->d_name[0]))
 606                         continue;
 607
 608                 if ((list_len + 1) >= list_size)
 609                 {
 610                         int *new_ptr;
 611                         int  new_size = 2 * list_size;
 612                         /* Comes in sizes: 2, 4, 8, 16, ... */
 613
 614                         new_ptr = (int *) realloc (list, (size_t) (sizeof (int) * new_size));
 615                         if (new_ptr == NULL)
 616                         {
 617                                 if (list != NULL)
 618                                         free (list);
 619                                 syslog (LOG_ERR, "processes plugin: "
 620                                                 "Failed to allocate more memory.");
 621                                 return (NULL);
 622                         }
 623
 624                         list = new_ptr;
 625                         list_size = new_size;
 626
 627                         memset (list + list_len, 0, sizeof (int) * (list_size - list_len));
 628                 }
 629
 630                 list[list_len] = atoi (ent->d_name);
 631                 if (list[list_len] != 0)
 632                         list_len++;
 633         }
 634
 635         closedir (dh);
 636
 637         assert (list_len < list_size);
 638         assert (list[list_len] == 0);
 639
 640         return (list);
 641 }
 642
 643 int ps_read_process (int pid, procstat_t *ps, char *state)
 644 {
 645         char  filename[64];
 646         char  buffer[1024];
 647         FILE *fh;
 648
 649         char *fields[64];
 650         char  fields_len;
 651
 652         int  *tasks;
 653         int   i;
 654
 655         int   ppid;
 656         int   name_len;
 657
 658         long long unsigned cpu_user_counter;
 659         long long unsigned cpu_system_counter;
 660         long long unsigned vmem_rss;
 661
 662         memset (ps, 0, sizeof (procstat_t));
 663
 664         snprintf (filename, 64, "/proc/%i/stat", pid);
 665         filename[63] = '\0';
 666
 667         if ((fh = fopen (filename, "r")) == NULL)
 668                 return (-1);
 669
 670         if (fgets (buffer, 1024, fh) == NULL)
 671         {
 672                 fclose (fh);
 673                 return (-1);
 674         }
 675
 676         fclose (fh);
 677
 678         fields_len = strsplit (buffer, fields, 64);
 679         if (fields_len < 24)
 680         {
 681                 DBG ("`%s' has only %i fields..",
 682                                 filename, fields_len);
 683                 return (-1);
 684         }
 685         else if (fields_len != 41)
 686         {
 687                 DBG ("WARNING: (fields_len = %i) != 41", fields_len);
 688         }
 689
 690         /* copy the name, strip brackets in the process */
 691         name_len = strlen (fields[1]) - 2;
 692         if ((fields[1][0] != '(') || (fields[1][name_len + 1] != ')'))
 693         {
 694                 DBG ("No brackets found in process name: `%s'", fields[1]);
 695                 return (-1);
 696         }
 697         fields[1] = fields[1] + 1;
 698         fields[1][name_len] = '\0';
 699         strncpy (ps->name, fields[1], PROCSTAT_NAME_LEN);
 700
 701         ppid = atoi (fields[3]);
 702
 703         if ((tasks = ps_read_tasks (pid)) == NULL)
 704         {
 705                 /* This happends for zombied, e.g. */
 706                 DBG ("ps_read_tasks (%i) failed.", pid);
 707                 *state = 'Z';
 708                 ps->num_lwp  = 0;
 709                 ps->num_proc = 0;
 710         }
 711         else
 712         {
 713                 *state = '\0';
 714                 ps->num_lwp  = 0;
 715                 ps->num_proc = 1;
 716                 for (i = 0; tasks[i] != 0; i++)
 717                         ps->num_lwp++;
 718
 719                 free (tasks);
 720                 tasks = NULL;
 721         }
 722
 723         /* Leave the rest at zero if this is only an LWP */
 724         if (ps->num_proc == 0)
 725         {
 726                 DBG ("This is only an LWP: pid = %i; name = %s;",
 727                                 pid, ps->name);
 728                 return (0);
 729         }
 730
 731         cpu_user_counter   = atoll (fields[13]);
 732         cpu_system_counter = atoll (fields[14]);
 733         vmem_rss = atoll (fields[23]);
 734         ps->vmem_minflt_counter = atol (fields[9]);
 735         ps->vmem_majflt_counter = atol (fields[11]);
 736
 737         /* Convert jiffies to useconds */
 738         cpu_user_counter   = cpu_user_counter   * 1000000 / CONFIG_HZ;
 739         cpu_system_counter = cpu_system_counter * 1000000 / CONFIG_HZ;
 740         vmem_rss = vmem_rss * pagesize_g;
 741
 742         ps->cpu_user_counter = (unsigned long) cpu_user_counter;
 743         ps->cpu_system_counter = (unsigned long) cpu_system_counter;
 744         ps->vmem_rss = (unsigned long) vmem_rss;
 745
 746         *state = fields[2][0];
 747
 748         /* success */
 749         return (0);
 750 } /* int ps_read_process (...) */
 751 #endif /* KERNEL_LINUX */
 752
 753 static void ps_read (void)
 754 {
 755 #if HAVE_THREAD_INFO
 756         kern_return_t            status;
 757
 758         int                      pset;
 759         processor_set_t          port_pset_priv;
 760
 761         int                      task;
 762         task_array_t             task_list;
 763         mach_msg_type_number_t   task_list_len;
 764
 765         int                      thread;
 766         thread_act_array_t       thread_list;
 767         mach_msg_type_number_t   thread_list_len;
 768         thread_basic_info_data_t thread_data;
 769         mach_msg_type_number_t   thread_data_len;
 770
 771         int running  = 0;
 772         int sleeping = 0;
 773         int zombies  = 0;
 774         int stopped  = 0;
 775         int blocked  = 0;
 776
 777         /*
 778          * The Mach-concept is a little different from the traditional UNIX
 779          * concept: All the work is done in threads. Threads are contained in
 780          * `tasks'. Therefore, `task status' doesn't make much sense, since
 781          * it's actually a `thread status'.
 782          * Tasks are assigned to sets of processors, so that's where you go to
 783          * get a list.
 784          */
 785         for (pset = 0; pset < pset_list_len; pset++)
 786         {
 787                 if ((status = host_processor_set_priv (port_host_self,
 788                                                 pset_list[pset],
 789                                                 &port_pset_priv)) != KERN_SUCCESS)
 790                 {
 791                         syslog (LOG_ERR, "host_processor_set_priv failed: %s\n",
 792                                         mach_error_string (status));
 793                         continue;
 794                 }
 795
 796                 if ((status = processor_set_tasks (port_pset_priv,
 797                                                 &task_list,
 798                                                 &task_list_len)) != KERN_SUCCESS)
 799                 {
 800                         syslog (LOG_ERR, "processor_set_tasks failed: %s\n",
 801                                         mach_error_string (status));
 802                         mach_port_deallocate (port_task_self, port_pset_priv);
 803                         continue;
 804                 }
 805
 806                 for (task = 0; task < task_list_len; task++)
 807                 {
 808                         status = task_threads (task_list[task], &thread_list,
 809                                         &thread_list_len);
 810                         if (status != KERN_SUCCESS)
 811                         {
 812                                 /* Apple's `top' treats this case a zombie. It
 813                                  * makes sense to some extend: A `zombie'
 814                                  * thread is nonsense, since the task/process
 815                                  * is dead. */
 816                                 zombies++;
 817                                 DBG ("task_threads failed: %s",
 818                                                 mach_error_string (status));
 819                                 if (task_list[task] != port_task_self)
 820                                         mach_port_deallocate (port_task_self,
 821                                                         task_list[task]);
 822                                 continue; /* with next task_list */
 823                         }
 824
 825                         for (thread = 0; thread < thread_list_len; thread++)
 826                         {
 827                                 thread_data_len = THREAD_BASIC_INFO_COUNT;
 828                                 status = thread_info (thread_list[thread],
 829                                                 THREAD_BASIC_INFO,
 830                                                 (thread_info_t) &thread_data,
 831                                                 &thread_data_len);
 832                                 if (status != KERN_SUCCESS)
 833                                 {
 834                                         syslog (LOG_ERR, "thread_info failed: %s\n",
 835                                                         mach_error_string (status));
 836                                         if (task_list[task] != port_task_self)
 837                                                 mach_port_deallocate (port_task_self,
 838                                                                 thread_list[thread]);
 839                                         continue; /* with next thread_list */
 840                                 }
 841
 842                                 switch (thread_data.run_state)
 843                                 {
 844                                         case TH_STATE_RUNNING:
 845                                                 running++;
 846                                                 break;
 847                                         case TH_STATE_STOPPED:
 848                                         /* What exactly is `halted'? */
 849                                         case TH_STATE_HALTED:
 850                                                 stopped++;
 851                                                 break;
 852                                         case TH_STATE_WAITING:
 853                                                 sleeping++;
 854                                                 break;
 855                                         case TH_STATE_UNINTERRUPTIBLE:
 856                                                 blocked++;
 857                                                 break;
 858                                         /* There is no `zombie' case here,
 859                                          * since there are no zombie-threads.
 860                                          * There's only zombie tasks, which are
 861                                          * handled above. */
 862                                         default:
 863                                                 syslog (LOG_WARNING,
 864                                                                 "Unknown thread status: %s",
 865                                                                 thread_data.run_state);
 866                                                 break;
 867                                 } /* switch (thread_data.run_state) */
 868
 869                                 if (task_list[task] != port_task_self)
 870                                 {
 871                                         status = mach_port_deallocate (port_task_self,
 872                                                         thread_list[thread]);
 873                                         if (status != KERN_SUCCESS)
 874                                                 syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 875                                                                 mach_error_string (status));
 876                                 }
 877                         } /* for (thread_list) */
 878
 879                         if ((status = vm_deallocate (port_task_self,
 880                                                         (vm_address_t) thread_list,
 881                                                         thread_list_len * sizeof (thread_act_t)))
 882                                         != KERN_SUCCESS)
 883                         {
 884                                 syslog (LOG_ERR, "vm_deallocate failed: %s",
 885                                                 mach_error_string (status));
 886                         }
 887                         thread_list = NULL;
 888                         thread_list_len = 0;
 889
 890                         /* Only deallocate the task port, if it isn't our own.
 891                          * Don't know what would happen in that case, but this
 892                          * is what Apple's top does.. ;) */
 893                         if (task_list[task] != port_task_self)
 894                         {
 895                                 status = mach_port_deallocate (port_task_self,
 896                                                 task_list[task]);
 897                                 if (status != KERN_SUCCESS)
 898                                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 899                                                         mach_error_string (status));
 900                         }
 901                 } /* for (task_list) */
 902
 903                 if ((status = vm_deallocate (port_task_self,
 904                                 (vm_address_t) task_list,
 905                                 task_list_len * sizeof (task_t))) != KERN_SUCCESS)
 906                 {
 907                         syslog (LOG_ERR, "vm_deallocate failed: %s",
 908                                         mach_error_string (status));
 909                 }
 910                 task_list = NULL;
 911                 task_list_len = 0;
 912
 913                 if ((status = mach_port_deallocate (port_task_self, port_pset_priv))
 914                                 != KERN_SUCCESS)
 915                 {
 916                         syslog (LOG_ERR, "mach_port_deallocate failed: %s",
 917                                         mach_error_string (status));
 918                 }
 919         } /* for (pset_list) */
 920
 921         ps_submit (running, sleeping, zombies, stopped, -1, blocked);
 922 /* #endif HAVE_THREAD_INFO */
 923
 924 #elif KERNEL_LINUX
 925         int running  = 0;
 926         int sleeping = 0;
 927         int zombies  = 0;
 928         int stopped  = 0;
 929         int paging   = 0;
 930         int blocked  = 0;
 931
 932         struct dirent *ent;
 933         DIR           *proc;
 934         int            pid;
 935
 936         int        status;
 937         procstat_t ps;
 938         procstat_entry_t pse;
 939         char       state;
 940
 941         procstat_t *ps_ptr;
 942
 943         running = sleeping = zombies = stopped = paging = blocked = 0;
 944         ps_list_reset ();
 945
 946         if ((proc = opendir ("/proc")) == NULL)
 947         {
 948                 syslog (LOG_ERR, "Cannot open `/proc': %s", strerror (errno));
 949                 return;
 950         }
 951
 952         while ((ent = readdir (proc)) != NULL)
 953         {
 954                 if (!isdigit (ent->d_name[0]))
 955                         continue;
 956
 957                 if ((pid = atoi (ent->d_name)) < 1)
 958                         continue;
 959
 960                 status = ps_read_process (pid, &ps, &state);
 961                 if (status != 0)
 962                 {
 963                         DBG ("ps_read_process failed: %i", status);
 964                         continue;
 965                 }
 966
 967                 pse.id       = pid;
 968                 pse.age      = 0;
 969
 970                 pse.num_proc = ps.num_proc;
 971                 pse.num_lwp  = ps.num_lwp;
 972                 pse.vmem_rss = ps.vmem_rss;
 973
 974                 pse.vmem_minflt = 0;
 975                 pse.vmem_minflt_counter = ps.vmem_minflt_counter;
 976                 pse.vmem_majflt = 0;
 977                 pse.vmem_majflt_counter = ps.vmem_majflt_counter;
 978
 979                 pse.cpu_user = 0;
 980                 pse.cpu_user_counter = ps.cpu_user_counter;
 981                 pse.cpu_system = 0;
 982                 pse.cpu_system_counter = ps.cpu_system_counter;
 983
 984                 switch (state)
 985                 {
 986                         case 'R': running++;  break;
 987                         case 'S': sleeping++; break;
 988                         case 'D': blocked++;  break;
 989                         case 'Z': zombies++;  break;
 990                         case 'T': stopped++;  break;
 991                         case 'W': paging++;   break;
 992                 }
 993
 994                 ps_list_add (ps.name, &pse);
 995         }
 996
 997         closedir (proc);
 998
 999         ps_submit (running, sleeping, zombies, stopped, paging, blocked);
1000
1001         for (ps_ptr = list_head_g; ps_ptr != NULL; ps_ptr = ps_ptr->next)
1002                 ps_submit_proc_list (ps_ptr);
1003 #endif /* KERNEL_LINUX */
1004 }
1005 #else
1006 # define ps_read NULL
1007 #endif /* PROCESSES_HAVE_READ */
1008
1009 void module_register (void)
1010 {
1011         plugin_register (MODULE_NAME, ps_init, ps_read, ps_write);
1012         plugin_register ("ps_rss", NULL, NULL, ps_rss_write);
1013         plugin_register ("ps_cputime", NULL, NULL, ps_cputime_write);
1014         plugin_register ("ps_count", NULL, NULL, ps_count_write);
1015         plugin_register ("ps_pagefaults", NULL, NULL, ps_pagefaults_write);
1016         cf_register (MODULE_NAME, ps_config, config_keys, config_keys_num);
1017 }
1018
1019 #undef BUFSIZE
1020 #undef MODULE_NAME